Shu Guang
Shu Guang
Industrial-grade fuses designed for transformers, motors, and electrical infrastructure.
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Established in 1992 as "Yueqing Shuguang Fuse Factory," our journey began in Yueqing, Zhejiang Province, known as the electrical capital of China. Today, Wenzhou Shuguang Fuse Co., Ltd. is a leading power technology enterprise that seamlessly integrates R&D, production, sales, and comprehensive after-sales service.
With over three decades of deep-rooted experience in high-voltage circuit protection, we have evolved from a local manufacturer into a globally recognized supplier of Custom Motor Fuses and specialized protection devices.
The rise of Industry 4.0 and smart manufacturing has heightened the demand for precision circuit protection. Modern industrial motors now operate under complex loads, requiring Custom Motor Fuses that can distinguish between temporary inrush currents and actual fault conditions. The shift towards electrification in mining, oil and gas, and wastewater treatment is driving the market for high-capacity current-limiting fuses.
With the global push for carbon neutrality, electric vehicles (EV) and renewable energy storage systems (BESS) are critical. We have adapted our manufacturing lines to produce high-performance EV Fuses that meet the stringent vibration and thermal requirements of automotive and battery applications, bridging the gap between traditional power and future energy.
From protecting offshore wind turbines in the North Sea to safeguarding heavy-duty mining motors in Australia, our fuses are designed for extreme environments. We provide customized solutions for high-altitude stations, humid tropical climates, and freezing industrial sites, ensuring the continuous operation of critical infrastructure worldwide.
Meeting and exceeding international standards for safety and performance.
Our products are designated by the Ministry of Electric Power Industry for the production of high-voltage fuses, including current-limiting types, power capacitor protection, and voltage transformer protection. Every unit undergoes rigorous testing at the National High-voltage Electrical Apparatus Quality Supervision and Inspection Center.
9001:2000 Certified
60282-1 Standards
43625 Compliant
C37.42 Performance
Our sales network spans the globe, providing consistent reliability to provincial power companies in China and industrial partners internationally. We are a dominant force in:
"The 'Shu Rong' brand has built a prestigious reputation by adhering to the principle: Development by science and technology, survival by quality."
As a leading China Custom Motor Fuse Factory, we offer strategic advantages that go beyond cost-efficiency:
R&D Excellence: We customize products based on specific user technical requirements in real-time.
Supply Chain Speed: Being in Yueqing allows us access to the world's most dense electrical supply chain.
Testing Infrastructure: Sophisticated in-house and national lab testing for all performance indicators.
High-quality raw materials and sophisticated testing equipment form the backbone of our quality assurance system. In recent years, we have significantly improved economic and social benefits by focusing on process flow optimization. Whether it's the DIN43625 back-up fuse-links or specialized Bay-O-Net transformer protection, our technology evolves with the industrial demand.
Reliable components for every high-voltage application.
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